I've been renovating parts of my home over the last year, and am finally rounding third base on my kitchen/dining room.
Over the ajoined rooms is a vaulted ceiling. (No attic...just your ceiling joists with insulation between them, and your roof) The drywall was cracked and there were some leaks in the roof, so I went ahead and removed all the old drywall and fixed the leaks, etc. Now, before I replace the ceiling, I've got all the insulation exposed and I've noticed that it's R-19.
Would it be worth replacing the R-19 with R-30? It's about 5-600 square feet of vaulted ceiling. So if my calculations are correct we're talking around 200 bucks and about a half days work?
Am I wasting a Sunday and 200 bucks?
Also, if I do go with the R-30, would it be worth taking all the old R-19 and layering it up in the attic over the existing insulation?
Thanks in advance. I'll post pics in a mega renovation thread when I'm all done with everything.